i have a third class in BSc Geology but i have pass both a PGD in management and MBA in nigeria please what school in europe will accept me to study for either a PG in geology or MSc in International Business. especially norway, denmark , germany or finland

You will have to check out their individual websites and find out. You can also contact the admission department for advice. If you are self funding you will most likely be accepted for a postgraduate degree. It doesn't matter so much that you have a 3rd because you already have a MBA.